Math Doubts

Cofactors of a Matrix


The product of the determinant of a square matrix by ignoring the entries in the row and column of a specific entry and the negative one raised to the power of sum of the number of row and the number of column of that entry, is called the cofactor of an entry.


The cofactor of an entry is a quantity and it is obtained by the product of the following two factors.

  1. The word “Lower” means situated below another part.
  2. The word “Triangular” means shaped like a triangle.

2 × 2 Matrix

Learn how to find the cofactors of all entries in a two by two square matrix.

3 × 3 Matrix

Learn how to evaluate the cofactors of all elements in a three by three square matrix.

Math Questions

The math problems with solutions to learn how to solve a problem.

Learn solutions

Math Worksheets

The math worksheets with answers for your practice with examples.

Practice now

Math Videos

The math videos tutorials with visual graphics to learn every concept.

Watch now

Subscribe us

Get the latest math updates from the Math Doubts by subscribing us.

Learn more

Math Doubts

A free math education service for students to learn every math concept easily, for teachers to teach mathematics understandably and for mathematicians to share their maths researching projects.

Copyright © 2012 - 2023 Math Doubts, All Rights Reserved